US AI stock sell-off shakes markets from Wall Street to Asia

Traders work on the floor at the New York Stock Exchange on 22 June 2026. Traders work on the floor at the New York Stock Exchange on 22 June 2026. A tech sell-off shook global markets on Tuesday as attention turned away from developments in the US war with Iran and toward the future of AI companies and chipmakers that have driven stock markets to record highs. The tech-heavy Nasdaq index closed 2.2% lower on Tuesday. The S&P 500 was also down by Tuesday afternoon, dropping 1.43% while the Dow remained steady.